Question

which quantity is proportional to 45⁄3?

Answer 1

45/3 is equal to 15.

But what are your answer choices?

Answer 2

so let's start with how to find proportions:

45/3 is equal to x/100

we cross multiply to get

4500 = 3x

which is 1500

so 1500/100 is proportional 45/3

you can use that basic equation for any numbers though

for example

45/3 is equal to x/26

1,170 = 3x

x = 390

so 45/3 is proportional to 390/26